some proc hung on rwsem_down_read_failed.cat /proc/pid/cmdline also hung.<br />
call trace as below:<br />
kernel: INFO: task axserver:202459 blocked for more than 120 seconds.<br />
kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.<br />
kernel: bidserver D ffff887bf26d7de0 0 202459 198052 0x00000080<br />
kernel: ffff887bf26d7db8 0000000000000086 ffff88541f65eeb0 ffff887bf26d7fd8<br />
kernel: ffff887bf26d7fd8 ffff887bf26d7fd8 ffff88541f65eeb0 ffff88541f65eeb0<br />
kernel: ffff887f6af44538 ffffffffffffffff ffff887f6af44540 ffff887bf26d7de0<br />
kernel: Call Trace:<br />
kernel: [<ffffffff816a9ad9>] schedule+0x29/0x70<br />
kernel: [<ffffffff816ab10d>] rwsem_down_read_failed+0x10d/0x1a0<br />
kernel: [<ffffffff81331ba8>] call_rwsem_down_read_failed+0x18/0x30<br />
kernel: [<ffffffff816a8d70>] down_read+0x20/0x40<br />
kernel: [<ffffffff816b07dc>] __do_page_fault+0x37c/0x450<br />
kernel: [<ffffffff816b08e5>] do_page_fault+0x35/0x90<br />
kernel: [<ffffffff816acb08>] page_fault+0x28/0x30
↧